Hmm... Once you throw a slider into the mix, it gets tricky.
Sometimes use a 80cm konova on an alu 190xprob. Will get wobble/shake at the extreme ends if I'm not careful.
If you expect to use the slider less than 50% of the time, I imagine the cheap route would be to get two tripods? You can use one for all your regular shots, and just pull out the other one for additional stability when you intend to use your slider. Weight will be okay (E.g., 2 x Cullmann Magic 4-Section Aluminum Tripod = 2.6kg), main sacrifice will be setup speed and manoeuvrability.
Such a tripod is a magnet for security guards overseas.
Tibet Film Location Permits.
Filming in Tibet is strictly controlled by the Chinese government. Unsanctioned filming can result in arrest and future bans from entering China, not to mention serious problems for local Tibetans involved.
http://emergefilmsolutions.com/country/2743-2/
You should give WF717 head a try. Cheap as chips, small and inconspicuous, and can be operated without the long handle. You'll be surprised how well it compares with Manfrotto 701.
Don't worry, it will survive the airport handlers. Just don't check in any camera. Many TV stations forbid their crew from checking in camcorders.